2581873488 has 80 divisors (see below), whose sum is σ = 7441984000. Its totient is φ = 857018880.

The previous prime is 2581873439. The next prime is 2581873493. The reversal of 2581873488 is 8843781852.

2581873488 is a `hidden beast` number, since 2 + 5 + 81 + 87 + 3 + 488 = 666.

It is a super-2 number, since 2×2581873488² = 13332141416074572288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91713 + ... + 116511.

It is an arithmetic number, because the mean of its divisors is an integer number (93024800).

Almost surely, 2^2581873488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2581873488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3720992000).

2581873488 is an abundant number, since it is smaller than the sum of its proper divisors (4860110512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2581873488 is a wasteful number, since it uses less digits than its factorization.

2581873488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25057 (or 25045 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 2581873488 is about 50812.1391795307. The cubic root of 2581873488 is about 1371.8658732677.

The spelling of 2581873488 in words is "two billion, five hundred eighty-one million, eight hundred seventy-three thousand, four hundred eighty-eight".